Asymptotic Bethe Ansatz from String Sigma Model on S^3 x R

Nikolay Gromov (1) , Vladimir Kazakov (1)

1 LPTENS - Laboratoire de Physique Théorique de l'ENS [École Normale Supérieure]

We derive the asymptotic Bethe ansatz (AFS equations) for the string on S^3 x R sector of AdS_5 x S^5 from the integrable nonhomogeneous dynamical spin chain for the string sigma model proposed in GKSV. It is clear from the derivation that AFS equations can be viewed only as an effective model describing a certain regime of a more fundamental inhomogeneous spin chain.

Domaines: Physique des Hautes Energies - Théorie [hep-th]

Nikolay Gromov, Vladimir Kazakov. Asymptotic Bethe Ansatz from String Sigma Model on S^3 x R. Nuclear Physics B, 2007, 780, pp.143. ⟨hal-00256750⟩